That is false. Even in Heavensward, the upper end of the APM scale was around 50 actions per minute. Warcraft doubles that, which is hardly surprising given that the baseline GCD is about a second faster and there's less clunk in action execution.

FFXIV also likes giving jobs very fixed but flowery rotations and puts them in very scripted, choreographed fights, such that you'll often find yourself at the exact same point in your rotation without fail (and without any real decision-making) at any given timestamp. Warcraft opts for a more barebones but proc-based approach, so the gameplay ends up being more reactive but more forgiving. I don't think that either approach is more 'skilled', but you will always have players on both ends of the spectrum. Some people like to brag about how their job has 15 combos and a 147 step rotation that they can plan out in a spreadsheet in advance and can perform in a semi-comatose state. Others like resource-based, proc-based, adrenaline-pumping, reactionary, fast decision-making, high APM gameplay. Ideally, games should offer both.